Replacement Valve Seat O-Ring

The CAT Pumps 43358 O-Ring is made with Buna-N material and is an authentic CAT Pumps factory part. This nitrile O-ring replaces a cracked, worn, or missing valve seat O-ring on a 5 frame plunger pump.

• Fits on 5 frame pump models
• Made with Buna-N rubber
• Genuine CAT Pumps replacement part

Use With These Pump Models:

• 310
• 310B
• 311
• 311C
• 340
• 340B
• 341
• 341C
• 350
• 350B
• 351
• 351C
• 317
• 347
• 357